Technical improvement of recycling and utilization of cleaning wastewater from recycled polyester filter element
In the preparation process of regenerated polyester,batch cleaning of filter cartridges is required,which brings about the emission of waste water and exhaust gas,causing serious pollution.The article has introduced technological transformation programs and measures such as the on-line recovery and recycling of washed wastewater and increasing the waste gas adsorption,whereby the washed wastewater is filtered through non-woven fab-rics and then precipitated,filtered and purified via a multi-stage sedimentation tank to reach standards.By evaluation and comparison of data before and after the implementation of technological transformation,it has been found that each batch of 60 filter cartridges could save about 70 tons of water,and reduce sewage emission about 60 tons.Hence these results have achieved well economic benefits through remarkable cost reduction,efficiency im-provement,energy saving and emission reduction effects.
regenerated polyesterfilter element cleaningcleaning wastewater online recyclingenergy-saving and emission reduction
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